This magical thriller is set among the crumbling canals and rooftops of Venice. A down-on-his-luck American detective is charged with the search for two orphaned children, who have run away from their aunt and uncle. The children are hiding in Venice, sheltered by a gang of children led by a mysterious young leader called The Thief Lord.

Firedrake, Ben, and their family friend, Sorrel, are in search of the mythical place where dragons can live in peace forever. Together they embark on a journey that takes them to magical lands where they meet marvelous creatures - and one ruthless villain.